static inline int __hfsplus_ext_cache_extent(struct hfs_find_data *fd,
struct inode *inode, u32 block)
{
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
int res;
WARN_ON(!mutex_is_locked(&hip->extents_lock));
if (hip->extent_state & HFSPLUS_EXT_DIRTY) {
res = __hfsplus_ext_write_extent(inode, fd);
if (res)
return res;
}
res = __hfsplus_ext_read_extent(fd, hip->cached_extents, inode->i_ino,
block, HFSPLUS_IS_RSRC(inode) ?
HFSPLUS_TYPE_RSRC :
HFSPLUS_TYPE_DATA);
if (!res) {
hip->cached_start = be32_to_cpu(fd->key->ext.start_block);
hip->cached_blocks =
hfsplus_ext_block_count(hip->cached_extents);
} else {
hip->cached_start = hip->cached_blocks = 0;
hip->extent_state &= ~(HFSPLUS_EXT_DIRTY | HFSPLUS_EXT_NEW);
}
return res;
}
void hfsplus_ext_write_extent(struct inode *inode)
{
if (HFSPLUS_I(inode).flags & HFSPLUS_FLG_EXT_DIRTY) {
struct hfs_find_data fd;
hfs_find_init(HFSPLUS_SB(inode->i_sb).ext_tree, &fd);
__hfsplus_ext_write_extent(inode, &fd);
hfs_find_exit(&fd);
}
}
static void hfsplus_ext_write_extent_locked(struct inode *inode)
{
if (HFSPLUS_I(inode)->extent_state & HFSPLUS_EXT_DIRTY) {
struct hfs_find_data fd;
hfs_find_init(HFSPLUS_SB(inode->i_sb)->ext_tree, &fd);
__hfsplus_ext_write_extent(inode, &fd);
hfs_find_exit(&fd);
}
}
static int hfsplus_ext_write_extent_locked(struct inode *inode)
{
int res = 0;
if (HFSPLUS_I(inode)->extent_state & HFSPLUS_EXT_DIRTY) {
struct hfs_find_data fd;
res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->ext_tree, &fd);
if (res)
return res;
res = __hfsplus_ext_write_extent(inode, &fd);
hfs_find_exit(&fd);
}
return res;
}
static inline int __hfsplus_ext_cache_extent(struct hfs_find_data *fd, struct inode *inode, u32 block)
{
int res;
if (HFSPLUS_I(inode).flags & HFSPLUS_FLG_EXT_DIRTY)
__hfsplus_ext_write_extent(inode, fd);
res = __hfsplus_ext_read_extent(fd, HFSPLUS_I(inode).cached_extents, inode->i_ino,
block, HFSPLUS_IS_RSRC(inode) ? HFSPLUS_TYPE_RSRC : HFSPLUS_TYPE_DATA);
if (!res) {
HFSPLUS_I(inode).cached_start = be32_to_cpu(fd->key->ext.start_block);
HFSPLUS_I(inode).cached_blocks = hfsplus_ext_block_count(HFSPLUS_I(inode).cached_extents);
} else {
HFSPLUS_I(inode).cached_start = HFSPLUS_I(inode).cached_blocks = 0;
HFSPLUS_I(inode).flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW);
}
return res;
}